US Congressman Proposes Bill to Curb Insider Trading in Prediction Markets

US Congressman Proposes Bill to Curb Insider Trading in Prediction Markets

Kalshi CEO Tarek Mansour endorses Rep. Ritchie Torres' push for a 2026 law banning insider trading by US officials in prediction markets, following high-profile Polymarket profits and record trading volumes.

Fact Check
The statement is strongly supported by multiple, consistent, and authoritative sources. A high-authority source from the Public Gaming Research Institute, citing a reputable congressional journalist, directly confirms the existence of a proposed bill named the "Public Integrity in Financial Prediction Markets Act of 2026" and states its specific purpose is to curb insider trading. This is corroborated by another highly relevant source, a news article from Federal News Network, which identifies the bill's sponsor as Rep. Ritchie Torres and confirms its intent to ban federal officials from using nonpublic information to trade in prediction markets. Further support comes from two lower-authority but highly relevant sources (a Substack newsletter and a blog post) that also report on a Congressman's plan to introduce such a bill. There are no contradictions among the relevant sources. Other provided materials were either irrelevant to the specific claim—focusing on general legality, sports betting, or unrelated topics—or provided only broad context about the regulation of prediction markets without mentioning a specific congressional bill. The consistency across several independent sources, including highly credible ones, makes the statement very likely to be true.
Summary

Kalshi CEO Tarek Mansour has voiced support for Rep. Ritchie Torres' 2026 Public Integrity Financial Prediction Market Act, designed to ban insider trading by federal officials in prediction markets. The bill follows controversy over a Polymarket wager netting $400,000 from non-public information, raising concerns about misuse of privileged data. December 2025 trading volumes reached $6.26 billion for Kalshi and $2.28 billion for Polymarket, underscoring the scale of these markets. The legislation targets enforcement in regulated platforms like Kalshi and aims to enhance market integrity.

Terms & Concepts
  • Prediction Market: A platform where participants trade contracts based on the outcomes of future events, such as elections or policy decisions.
  • Insider Trading: The illegal practice of trading financial assets based on material non-public information.
  • Material Non-Public Information: Confidential information that could significantly influence an asset’s price if made public.